This is where the national park begins.
The Lower Oder Valley National Park, part of the Lower Oder Valley International Park, is a national park established in Germany in 1995. It is located on the lower reaches of the Oder in north-eastern Brandenburg in the districts of Barnim and Uckermark, covers an area of 10,323 hectares and was inaugurated on September 10, 1995.[1][2] On the German side, the national park is surrounded by the 17,774-hectare conservation area of the Lower Oder Valley National Park Region. The national park forms a spatial unit with the adjacent Polish landscape park Lower Oder Valley (Park Krajobrazowy Dolina Dolnej Odry, approx. 6,000 ha) and the Zehden landscape park (Cedyński Park Krajobrazowy, approx. 30,850 ha) and its protection zone. The protected area is part of the European ecological network Natura 2000.
Since the declarations and resolutions of the German-Polish Environmental Council of 1992, the area with its central part between the Hohensaaten-Friedrichsthal waterway and the course of the Oder, including the adjacent area on the German side and the intermediate river area between the East and West Odra of Widuchowa (Fiddichow) to the Skosnica Canal (Klützer Querfahrt) on the Polish side as a cross-border protected area and bears the name International Park Unteres Odertal. The cross-border protection zone covers a total area of 1,172 km² and stretches over 60 km along the Oder on both the German and Polish sides. The administration of the national park is located on the premises of the castle in Criewen in the national park center Unteres Odertal. There is also the national park house with an exhibition. (Wikipedia)